August 2019
Probabilistic approach for shale volume estimation in Bornu Basin of Nigeria
The gamma ray log has over the years provided the conventional means for shale volume (Vsh) estimation. Knowledge of Vsh is used in the prediction of petrophysical parameters like effective porosity and water saturation, which are the input parameters for the calculation of oil in place. Currently, many studies have been conducted on the Bornu Basin of Nigeria, to access its hydrocarbon potential. Unfortunately, the...
August 2019
A dry gas material balance with an infinite aquifer influence: A comparative study between the unsteady state model of van Everdingen-Hurst and analytical model
Aquifer water influx is an important natural mechanism for primary recovery. It affects the performance of all types of reservoirs, also natural gas reservoirs. Water influx provides pressure support during reservoir depletion, resulting in slower pressure decline. Consequently, gas reservoirs associated with large aquifers show a flattening, cubic behavior of the p/z vs. Gp curve, which allowed the development of the...
August 2019
Concept of complete CO2 capture from natural gas inside exploration wells and its storage in rock reservoirs
The innovative concept herein shown intends to present a new system of carbon capture and storage (CCS) from natural gas extracted on cement completions of gas wells by absorbent selective nanoporous materials, forming conducting channels on linked pores. CO2 fluids will be transported upwards and then injected and stored in upper nonproductive oil and gas porous rock reservoirs by the removal-transport-injection system...
August 2019
A statistical approach to investigate oil displacement efficiency in thermal recovery techniques for heavy oil based on one-dimensional core experiment
Precise description of displacement efficiency (Ed) is extremely important for evaluating the performance, economic effectiveness and final recovery of thermal recovery techniques. Current researches mainly focused on one-dimensional core displacement experiment, and it is difficult to obtain precise Ed beyond the range of test points. In addition, there are two ways to improve the Ed for thermal flooding: Increasing...
September 2019
Evaluating the performance of ultrasound energy on improved oil recovery using MATLAB reservoir simulation toolbox (MRST)
There are many processes the oil industry used to recover more oil from the reservoir after the natural energy is depleted. In this research work, ultrasound energy has been tested as a method of improving oil recovery after waterflooding. The method used in this research work was a numerical simulation using MATLAB Reservoir Simulation Toolbox (MRST-2017a). Ultrasound energy source equation was incorporated into the...
October 2019
Software approach on crude oil yields prediction: A case study of Tema Oil Refinery
Yield prediction is an integral part of every refinery process due to the intricacy of the process and composition of crude oil. Inability to sufficiently predict the yields before refinery process creates challenges such as inadequacy in planning the operating conditions to meet product target, product optimisation failure and inability to meet product market specification. Predicting yields using a yield pattern model...
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